(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Physics

Describe in brief, with the aid of a sketch diagram, an experiment to demonstrate that a material medium is necessary to transmit sound.

How are sound waves produced? How are sound waves transmitted from one place to the other?

How will the following factors affect the speed of sound in air:
Pressure of air.

How will the following factors affect the speed of sound in air:
Temperature of air.

How will the following factors affect the speed of sound in air:
Humidity.

How will the following factors affect the speed of sound in air:
Wind.

State three important uses of echolocation.

What do you mean by inertia of motion?

Give one example each of inertia of rest and inertia of motion.

The greater is the __________ the greater is the inertia of an object.

Name the different kinds of inertia an object can possess. Give an example of each.

The amount of inertia of a body depends on its _________.

A man riding on a car has ___________ Inertia.

What do you mean by inertia of rest?

Give two examples of the following:
Inertia of rest

Give two examples of the following:
Inertia of motion

Name the scientist who first stated the law of inertia.

Differentiate between gravitational mass and inertial mass.

Can distance covered by a body be less than the magnitude of its displacement?

Define displacement.